Parallel Random Access Machine

A Parallel Random Access Machine (PRAM) is an abstract machine for designing the algorithms applicable to parallel computers. It eliminates the focus on miscellaneous issues such as synchronization and communication, but lets designer think explicitly about the exploitation of concurrency. In terms of Flynn's taxonomy, PRAMs are multiple instruction multiple data (MIMD) computers.
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<parallel> (PRAM) An idealised parallel processor consisting of P processors, unbounded shared memory, and a common clock. Each processor is a random access machine (RAM) consisting of R registers, a program counter, and a read-only signature register. Each RAM has an identical program, but the RAMs can branch to different parts of the program. The RAMs execute the program synchronously one instruction in one clock cycle.
See also pm2.
(1997-06-04)